<template>
  <div class="song-list">
    <ul class="song-list-header">
      <li v-for="(item,index) in songStyle" :key="index" @click="handleChangeView(item.name)"
          :class="{active:item.name==activeName}">
        {{item.name}}
      </li>
    </ul>
    <div>
      <content-list :contentList="data"></content-list>
      <div class="pagination">
        <el-pagination @current-change="handleCurrentChange" background layout="total,prev,pager,next"
                       :current-page="currentPage" :page-size="pageSize" :total="albumDatas.length">
        </el-pagination>
      </div>
    </div>
  </div>
</template>
<script>
  import ContentList from '../components/ContentList'
  import {getAllSongList, getSongListOfLikeStyle} from '../api/index'
  import {mixin} from '../mixins'
  import {songStyle} from '../assets/data/songList'

  export default {
    name: 'song-list',
    components: {
      ContentList
    },
    data () {
      return {
        albumDatas: [],      //歌单数据
        pageSize: 15,        //页面大小，一页有15条数据
        currentPage: 1,      //当前页，默认第一页
        songStyle: [],           //风格
        activeName: '全部歌单'    //当前风格
      }
    },
    computed: {
      //计算当前表格中的数据
      data () {
        return this.albumDatas.slice((this.currentPage - 1) * this.pageSize, this.currentPage * this.pageSize)
      }
    },
    mounted () {
      this.songStyle = songStyle
      this.getSongList()
    },

    methods: {
      getSongList () {
        getAllSongList()
          .then(res => {
            this.currentPage = 1
            this.albumDatas = res
          })
      },
      //获取当前页
      handleCurrentChange (val) {
        this.currentPage = val
      },
      //根据Style显示对象歌单
      handleChangeView (name) {
        this.activeName = name
        this.albumDatas = []
        if (name == '全部歌单') {
          this.getSongList()
        } else {
          this.goSongListOfStyle(name)
        }
      },
      //根据Style显示对象歌单
      goSongListOfStyle (style) {
        getSongListOfLikeStyle(style)
          .then(res => {
            this.currentPage = 1
            this.albumDatas = res
          })
      }
    }
  }
</script>

<style lang="scss" scoped>
  @import '../assets/css/song-list.scss';
</style>
